XML 66 R45.htm IDEA: XBRL DOCUMENT v3.6.0.2
Fair Value Measurements (Assets and Liabilities Measured at Fair Value on a Recurring Basis) (Details) - Fair Value, Measurements, Recurring - USD ($)
$ in Millions
Dec. 31, 2016
Dec. 31, 2015
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Money market funds $ 29 $ 13
Net derivative contracts 41 (42)
Available for sale investments 16 25
Quoted Prices In Active Markets for Identical Assets (Level 1)    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Money market funds 29 13
Net derivative contracts 0 0
Available for sale investments 16 25
Significant Other Observable Inputs (Level 2)    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Money market funds 0 0
Net derivative contracts 41 (42)
Available for sale investments 0 0
Total Cost Basis    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Money market funds 29 13
Net derivative contracts 0 0
Available for sale investments $ 4 $ 11